Man, it's a crying shame the guit's a bit out of tune. Sounds like maybe a capo threw off the low E string. Anyway, it's a minor issue once the vocals start, because that performance is truly special. Did you 2 track it live?
you know, you might be able to cover that guitar a bit if you added another one. I don't know if you have the ability to adjust the git track, but it could come down a db or 2 and still sit nicely, I think.
Again, great vocals.